package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
//
//    @PostMapping("/login")
//    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee)
//    {
//        //1.对密码加密
//        String password = employee.getPassword();
//        password = DigestUtils.md5DigestAsHex(password.getBytes());
//
//        //2.根据username查数据库
//        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
//        queryWrapper.eq(Employee::getUsername, employee.getUsername());
//        Employee emp = employeeService.getOne(queryWrapper);
//
//        //3.判断是否查询到
//        if(emp == null)
//        {
//            return R.error("用户不存在，登录失败");
//        }
//
//        //4.密码比对
//        if(!emp.getPassword().equals(password))
//        {
//            return R.error("密码错误，登录失败");
//        }
//
//        //5.判断状态
//        if(emp.getStatus() == 0)
//        {
//            return R.error("账号禁用");
//        }
//
//        //6.登录成功
//        request.getSession().setAttribute("employee", emp.getId());
//        return R.success(emp);
//    }

    /**
     * 登录login功能
     * @param request
     * @param employee
     * @return
     */
    //自己写了一遍
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request , @RequestBody Employee employee)
    {
        //1.对密码加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据用户名查询数据库
        LambdaQueryWrapper<Employee> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(Employee::getUsername, employee.getUsername());

        Employee emp = employeeService.getOne(lambdaQueryWrapper);

        //3.用户是否存在
        if(emp == null){
            return R.error("用户不存在");
        }


        //4.密码对比是否一致
        if(!password.equals(emp.getPassword()))
        {
            return R.error("密码错误");
        }

        //5.用户是否被禁用
        if(emp.getStatus() == 0)
        {
            return R.error("用户被禁用");
        }

        //6.成功查询到
        request.getSession().setAttribute("employee", emp.getId());

        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request)
    {
        request.getSession().removeAttribute("employee");

        return R.success("退出成功");

    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee)
    {
        log.info("新增员工，员工信息{}", employee.toString());

        //设置初始密码
        String password = "123456";
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        employee.setPassword(password);

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        //获取当前用户的id
//        Long id = (Long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(id);
//        employee.setUpdateUser(id);

        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name)
    {
        log.info("page = {}, pageSize = {}, name = {}", page,pageSize,name);

        //构造分页构造器
        Page info = new Page(page,pageSize);

        //构造条件构造器，解决name
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);

        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        employeeService.page(info, queryWrapper);
        //条件查询
        return R.success(info);
    }

    //更新用户信息
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee)
    {
        log.info(employee.toString());

        //设置employee的信息
        employee.setUpdateTime(LocalDateTime.now());
        Long id = (Long) request.getSession().getAttribute("employee");

        employee.setUpdateUser(id);

        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    //根据id查用户信息
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id)
    {
        log.info("根据id查员工信息");
        Employee employee = employeeService.getById(id);
        if(employee != null)
        {
            return R.success(employee);
        }
        return R.error("未查询到当前用户信息");
    }

}
